I'll try to keep this short ! I have recently seemed to inherit a drain problem in my village, a clean water pipe that leads away from a septic tank keeps blocking up, tree roots and old ceramic pipes, and is causing tge septic system to back up but the problem is where the pipe runs thru there is a large 3 phase electic cable running to a substation which appears to be right on top of the drain pipe ! Would the electricity company(northen powergrid) come out and uncover the cables ? I've got maps off them in the past for cable locations but with this problem there is no margin for error when it comes to finding the drain even with a spade ! Any advice would be good !